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Homework Help: Quantum oscillator

  1. Mar 3, 2007 #1
    1. The problem statement, all variables and given/known data

    Assuming a pendulum to behave like a quantum oscillator, what are the energy differences between the quantum states of a pendulum of length 1m? Are such differences observable?

    2. Relevant equations

    3. The attempt at a solution

    would the energy differences just be 1 since for each energy state n you have E_n=(n+1/2)h_bar*sqrt(k/m)? This would not be observable either since these are such low energies... correct?
  2. jcsd
  3. Mar 3, 2007 #2
    Compare E_n to E_n+1
  4. Mar 4, 2007 #3

    Meir Achuz

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    Gold Member

    I think they want you to calculate the energy in joules.
  5. Mar 4, 2007 #4
    But wouldn't they have provide him with the mass of the pendulum?
    in his statement they only gave him the length , I think it's like robb said , a comparison between E_n and E_n+1
  6. Mar 4, 2007 #5
    No they don't, it's a pendulum in harmonic oscillation, so you can say its angular frequency is simply sqrt(g/L), then solve for (1/2)hw
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